1 00:00:02,160 --> 00:00:04,280 The Digestive System 2 00:00:04,280 --> 00:00:07,160 Digestion 3 00:00:07,160 --> 00:00:13,640 Digestion is the process by which our body breaks down food and absorbs them. 4 00:00:14,039 --> 00:00:17,160 It takes place in the digestive system. 5 00:00:17,920 --> 00:00:21,100 Every day we eat food to give us energy. 6 00:00:21,820 --> 00:00:24,199 Digestion is part of nutrition. 7 00:00:25,800 --> 00:00:27,219 The Mouse 8 00:00:27,219 --> 00:00:30,699 First you take a mouthful of food. 9 00:00:30,699 --> 00:00:40,159 Your teeth cut up and chew food. Your tongue mixes the food with saliva. This mix is called bolus. 10 00:00:40,159 --> 00:00:48,159 The salivary glands produce the saliva. We swallow the bolus and it is pushed into the pharynx. 11 00:00:50,700 --> 00:00:51,539 Pharynx 12 00:00:51,539 --> 00:00:56,159 The muscles in the pharynx push the bolus down to the esophagus. 13 00:00:58,159 --> 00:00:58,960 Esophagus 14 00:00:58,960 --> 00:01:04,959 The chewed food travels down the esophagus into your stomach. 15 00:01:04,959 --> 00:01:10,959 In the stomach, you store the food you have eaten. 16 00:01:10,959 --> 00:01:14,959 Then, the chewed food mixes with gastric juices. 17 00:01:14,959 --> 00:01:18,959 This mixture is called chyme. 18 00:01:18,959 --> 00:01:23,959 The gastric juices also kill bacteria that are in the stomach. 19 00:01:23,959 --> 00:01:33,640 the chine travels to the small intestine liver the liver secretes bile which 20 00:01:33,640 --> 00:01:41,519 helps break down fats gallbladder the function of the gallbladder is to store 21 00:01:41,519 --> 00:01:49,760 and concentrate the bile secreted by the liver pancreas the pancreas secretes 22 00:01:49,760 --> 00:01:55,879 pancreatic juices that help you to provide the enzymes necessary for the 23 00:01:55,879 --> 00:02:06,219 digestion of fats. Small intestine. Liquid food travels into a long, thin tube. 24 00:02:06,219 --> 00:02:12,199 Juiceful nutrients are absorbed through the small intestine into your blood. Your 25 00:02:12,199 --> 00:02:18,879 small intestine is lined with millions of tiny bumps called bilii. Food 26 00:02:18,879 --> 00:02:28,400 nutrients soak in through the belly into your blood large intestine unwanted food 27 00:02:28,400 --> 00:02:36,280 travels into a wider shorter tube called the large intestine your large 28 00:02:36,280 --> 00:02:43,599 intestine sucks water out of the leftover food leftover food is squeezed 29 00:02:43,599 --> 00:02:52,599 along your large intestine solid waste forms in the large intestine rectum the 30 00:02:52,599 --> 00:02:58,120 rectum receives the waste materials that remain after the entire process of 31 00:02:58,120 --> 00:03:05,560 digestion of the food constituting phases the rectum is the final part of 32 00:03:05,560 --> 00:03:14,979 the large intestine. Enos. Solid waste leaves the body through the anus. The 33 00:03:14,979 --> 00:03:20,979 waste is pushed out of your bottom and it comes out when you go to the loo.